Representative before the EPO

Employment test 1 - 10 employees
Company dna patentanwaltskanzlei rumrich
operating since 1993
Headquarter in Chemnitz and 5 offices
active in Legal Services and IP Consulting

Representative before the EPO

Company dna patentanwalte knefel and knefel
no operation time available
1 office
active in Legal Services

We have observed 32 EP applications Cordula Knefel has served for within the last five+ years. (We consider all applications which have an EP A1 or A2 publication dated after August 06, 2013). Please note, that we only count EP applications, in which the name of the patent attorney is explicitly mentioned as representative. These EP applications are:

EP13000436

Flight system

IPC classification:
G05D 1/00, A63H 30/04, A63H 27/00
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Agent:
Walther Walther & Hinz GbR
Status:
EXAMINATION IN PROGRESS
EP14155807

Vacuum system

IPC classification:
F16L 23/16, F04D 29/52, F04D 29/08, F04D 19/04, F04C 27/00, F04C 25/02, F04B 37/14
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
The patent has been granted
EP13192442

Vacuum system

IPC classification:
F04D 19/04, F04C 27/00, F04C 25/02, F04C 11/00
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
PATENT GRANTED
EP14169692

Vacuum assembly with a vacuum device and method for detecting communicated data in a communication line between a vacuum device and a central control device

IPC classification:
G08C 19/00
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
The patent has been granted
EP13193613

Method for coating and/or varnishing of the magnet rings of a rotor magnet bearing, rotor magnet bearing and vacuum pump

IPC classification:
F16C 32/04, B05D 3/04, B05D 1/00
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
GRANT OF PATENT INTENDED
EP14181981

Vacuum pump and assembly with a vacuum pump

IPC classification:
F04D 29/66, F04D 29/60, F04D 29/58, F04D 29/52, F04D 19/04
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
GRANT OF PATENT INTENDED
EP14183255

Assembly with a vacuum pump and method for compensating for a magnetic field of at least one component creating a magnetic interference field arranged in a vacuum pump

IPC classification:
F04D 29/66, F04D 29/058, F04D 27/02, F04D 19/04, F04B 37/14
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
GRANT OF PATENT INTENDED
EP14152769

Device for electrostimulation, and method for controlling multiple electrodes in a device for electrostimulation

IPC classification:
A61N 1/36, A61N 1/04
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
PATENT GRANTED
EP14189143

Housing for a roller piston pump

IPC classification:
F04C 29/12, F04C 29/04, F04C 18/12
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION IN PROGRESS
EP14196002

VACUUM PUMP WITH IMPROVED INLET GEOMETRY

IPC classification:
F04D 29/52, F04D 19/04
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
The patent has been granted
EP14197103

VACUUM PUMP WITH LUBRICANT COOLER

IPC classification:
F04C 29/04, F04C 29/02, F04C 25/02
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15154603

Solid fuel fireplace for domestic use

IPC classification:
E05B 3/00, F23M 7/00, F24B 13/00
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
APPLICATION DEEMED TO BE WITHDRAWN
EP15151656

Vacuum pump

IPC classification:
F04C 29/00, F04C 27/00
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15164991

VACUUM PUMP WITH COOLING FINS

IPC classification:
F04C 29/04, F04C 29/02, F04C 25/02, F04C 18/12, F01C 21/10, F01C 17/02
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15185155

METHOD FOR MANUFACTURING A ROTOR OR STATOR DISC FOR A VACUUM PUMP AND ROTOR OR STATOR DISC FOR A VACUUM PUMP

IPC classification:
F04D 29/64, F04D 29/54, F04D 29/32, F04D 29/02, F04D 19/04
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION IN PROGRESS
EP15186299

VACUUM PUMP

IPC classification:
F04D 29/64, F04D 29/058, F04D 19/04, F16C 25/00, F16C 32/04
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION IN PROGRESS
EP15192791

DEVICE WITH A SENSING HEAD

IPC classification:
G01B 5/00, G01B 5/012, G01B 21/04
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
The patent has been granted
EP14198987

Vacuum pump

IPC classification:
F04D 29/52, F04D 29/02, F04D 19/04
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION IN PROGRESS
EP11791564

DEVICE AND METHOD FOR WETTING GRAIN WITH A LIQUID

IPC classification:
B02B 1/04
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
PATENT GRANTED
EP15195426

ASSEMBLY FOR STORING THE SPINDLE OF A VACUUM PUMP

IPC classification:
F16C 19/06, F04D 29/66, F16C 35/04, F16C 27/04, F04D 29/059, F04D 29/056, F04D 19/04, F04D 17/16
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15186607

SPIRAL VACUUM PUMP

IPC classification:
F04C 18/02, F04C 29/00
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15157105

Vacuum pump and method for detecting a contact between at least one rotor and a stator of a vacuum pump

IPC classification:
F04C 18/12, F04C 18/16, F04C 29/00, F04C 28/28, F04C 25/02
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15158563

VACUUM PUMP

IPC classification:
F04C 18/16, F04D 29/059, F04D 19/04
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15158724

Vacuum pump and method for operating a scroll pump or a vacuum pump with at least two pump stages

IPC classification:
F04B 49/20, F04B 39/04, F04C 27/00, F04C 25/02, F04B 37/14
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15160152

HOUSING FOR A VACUUM PUMPING AND/OR FOR A PIECE OF A VACUUM PUMP

IPC classification:
F04D 29/52, F04D 29/58, F04D 19/04
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP16171251

SIDE-CHANNEL VACUUM PUMP STAGE WITH A STRIPPER THAT IS SLANTED ON THE SUCTION SIDE

IPC classification:
F04D 29/16, F04D 29/40, F04D 29/68, F04D 19/04, F04D 17/16
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP16171240

SIDE-CHANNEL VACUUM PUMP STAGE WITH A CHANNEL CROSS-SECTION THAT FEATURES A PARTICULAR CURVATURE

IPC classification:
F04D 29/16, F04D 29/40, F04D 29/68, F04D 19/04, F04D 17/16
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15172427

VACUUM PUMP

IPC classification:
F16D 1/06, F04B 37/14, F04D 25/06, F04D 19/04, H02K 1/27
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15174844

SPLIT FLOW VACUUM PUMP AND VACUUM SYSTEM WITH A SPLIT FLOW VACUUM PUMP

IPC classification:
F04D 29/58, F04D 29/52, F04D 29/053, F04D 19/04
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
EXAMINATION REQUESTED
EP15174845

SPLIT FLOW VACUUM PUMP

IPC classification:
F04D 29/053, F04D 19/04
Applicant:
Pfeiffer Vacuum GmbH
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
Request for examination was made
EP16165722

COORDINATE MEASURING DEVICE WITH AN ANALOGUE TOUCH PROBE, AND METHOD FOR MEASURING A WORKPIECE BY MEANS OF A COORDINATE MEASURING DEVICE

IPC classification:
G01B 3/00, G01B 7/012, G01B 5/012
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
Request for examination was made
EP16196639

METHOD FOR CARRYING OUT CASH-FREE PAYMENT TRANSACTIONS WITH CARDS OF CLOSED AND OF OPEN PAYMENT SYSTEMS

IPC classification:
G06Q 20/06, G06Q 20/04, G06Q 20/34
Agent:
Cordula Knefel, Patentanwälte Knefel & Knefel
Status:
The application has been published

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